Kelly,
When I was in class to become a CPST (Child Passenger Safety
Technician) we were told that if we were asked to recommend a CSS
(Child Safety Seat) that we should answer with, "buy one that fits the
child, fits the vehicle & will be used correctly every time." We were
told no to make a recommendation at work for liability purposes.
However, on a forum like this we have a little more liberty to express
our personal views. I personally do not like the Intera and I feel
like it is overpriced for what it is. The Touria/Regal Ride is a
little narrower than the Intera and cost only 1/2 to 1/3 the price of
the Intera (depending on where you buy them). The Touriva/Regal Ride
has 35# RF & 40# FF weight limits and is a breeze to install. This
CSS does not have EPS foam, but neither does the the Intera. Dorel
Juvenile Products makes both CSS one is just a better value than the
other. The Touriva/Regal Ride is getting harder to find, but there
are still some out there. I found one on-line for only $54.95. I
will include the link below.
http://dreamtimebaby.com/tococarsebyc.html
This site also currently offers free shipping (special offer) for
orders over $99. If you decided to buy 2 more Touriva CSS to go with
the one you have you may only have to spend about $110 to get what you
need.
Another inexpensive CSS option is the Scenera. However, this CSS is
almost a full 2" wider that the Touriva, and you may not be able to
fit 2 of these and you existing Touriva across the back seat. This
would be a great option for you if they will fit. These Scenera CSS
are almost always in stock at Wal*Mart and usually sell for about $50
each. They have been on sale this past month for only about $40.
They went on sale about the same time as TRU started their big sale
which ends the 30th. I don't know how long Wal*Mart will continue to
have them reduced $10.
Check out the link below for car seat measurements.
(Carseat Data website closed - link broken)
The Radian is another great option if you need a narrow seat. Plus they can FF til 65# and the new Radian 80 ($100 more than Radian 65) can go up to 80#. The Radian is probably the best value for your money if you want to buy a convertible CSS with a 5pt harness rated for 65#. Also it is much narrower that all of the other 65# CSS on the market. This makes a difference if you have a smaller vehicle. However, the Radian is not listed in the car seat measurement link that I provided above. The manufacturer's website list the overall dimentions as 28.5"H x 17"W x 16"D, but the seat base is even narrower than the 17" overall width. Below is a link, go there for more dimentions. Scroll down to near the bottom of the page to find the dimentions and click on the red text which reads "Click to view Radian Dimensions" to view a picture with more dimentions listed. Check out the Radian for yourself on the manufacturer's website:
http://skjp.com/products/index.php?v=cat&cid=5&name=Car Seats
The Radian is only $179.00 here with free shipping.
http://carseats.babycatalog.com/infant-to-toddler-convertible-car-seats/radian-car-seat/radian.html
HTH